The effect of chlorine content in coal on the evolution of HCl during combustion by TGA FTIR MS

作者：Li Han · 发表于：Clean Coal Technonlogy · 年份：1999 · 被引用次数：1 · 研究领域：Coal and Its By-products、Coal and Coke Industries Research、Coal Properties and Utilization

By using TGA FTIR MA technique, the effects of Cl content on the evoluation of HCl during combustion were evaluated. FTIR results indicate that the maximum absorbency of HCl released from medium and high chlorine content coal is basically proportion to the content of chlorine. MS results show that T max1 (at about 300 ℃) of the first HCl peak is independent on the Cl content in coal. A direct relationship between chlorine content and the HCl release (integration of area) was established with good agreement ( R 2=0 997). Three HCl peaks were observed during combustion. This indicates the existence of three mechanisms of chlorine binding and release. The first release peak is due to Cl - ion normally adsorbed on micropore walls. The second emission represents more tightly bond with coal matrix. The third peak is a result of inorganic chlorides in the coal.